Magnetic and microwave absorption properties of PVB/Fe3O4 and PVB/NiFe2O4 composites


Akinay Y. , Hayat F., Çakır M., Akın E.

Polymer Composites, cilt.39, ss.3418-3423, 2018 (SCI Expanded İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 39 Konu: 10
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1002/pc.24359
  • Dergi Adı: Polymer Composites
  • Sayfa Sayıları: ss.3418-3423

Özet

Electromagnetic and microwave absorbing properties of Polyvinylbutyral (PVB)/Fe3O4 and PVB/NiFe2O4 composites were investigated in the 1-14 GHz. PVB/filler particles (Fe3O4 and NiFe2O4) composites were prepared with 90/10 mixture ratios via Ultrasonic Probe Sonicator method in solution. The complex permittivity (epsilon-j epsilon) and permeability (- j) of the composites have been measured at different microwave frequencies in 1-14 GHz employing vector network analyzer (Keysight N9926A). The reflection loss (R-L) of composites was calculated and evaluated using theory of the absorbing wall. It was found that, both composites exhibit the large reflection loss and broadband within the frequency range from 1 to 14 GHz for 3, 5, and 7 mm. However, the R-L results show that, when the thickness is 7 mm, the minimum R-L was found to be -22.9 dB (99% power absorption) at the frequency of 13.93 GHz. The Fe3O4/PVB and NiFe2O4/PVB composites have potential application for microwave and radar absorptions. POLYM. COMPOS., 39:3418-3423, 2018. (c) 2017 Society of Plastics Engineers